Specifically, if the measurement reporting event configured in reportConfig in step 310 is the event A3, the delta configuration information may be the handover condition threshold, where the handover condition threshold is equal to the first signal quality threshold. Alternatively, the delta configuration information may be the handover condition variable threshold, and a sum of the handover condition variable threshold and the first reporting condition threshold corresponding to the first measurement identifier is equal to the first signal quality threshold. In this case, when the signal quality of the cell corresponding to the first measurement object is greater than the sum of the signal quality of the serving cell and the first signal quality threshold, a handover condition is triggered, and the terminal device may determine the cell as the first target cell.